Thirteen people, seemingly unrelated to each other at first glance, find themselves in the same mountain monastery, converted into an upscale hotel. At first everything goes well, but suddenly the guests - one after another - are taken away by Death: one is killed with a crossbow, another is hanged, the third is poisoned... Moscow historian Alexander Sivere, going on vacation on a tourist package, could not even imagine that he would end up in such a situation. binding and that it is he, the armchair scientist, who will have to save the world and meet true love!